import pytest
from game import shuffle_field,EMPTY_MARK
finished_list = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, EMPTY_MARK]

@pytest.mark.parametrize('field1, field2', [
        (shuffle_field(), shuffle_field()), 
        (shuffle_field(),finished_list)])
def test_shuffle(field1,field2):
    assert field1 != field2

def test_len():
    assert len(shuffle_field())== 16

def test_elements():
    field=shuffle_field()
    for elements in finished_list:
        assert elements in field